Evaluation of Groundwater Vulnerability with Improved DRASTIC Method

AbstractThe groundwater pollution in many regions is becoming more and more serious because of over-exploiting and industrial activities. Typically, the groundwater system in intensive planting area is facing with serious threat of pollution from over-using of fertilizer. In this paper, AHP (Analytic of Hierarchy Process) method was used to reset the weights of DRASTIC parameters referring to the conditions of intensive plantation in Jiangyin city and to evaluate the groundwater vulnerability. The results show that the groundwater in most of the study area was susceptible to pollution; A minor of area is less susceptible to the groundwater pollution. The evaluation results for groundwater quality is consisted with the actually situation in study area. The work is helpful in guiding a theoretical and practical regulation for groundwater resource